Laboratory products catalog.
Ahlstrom is a high performance fiber-based materials
company, partnering with leading businesses around
the world to help them stay ahead. We aim to grow with
a product offering for clean and healthy environment.
Our materials are used in everyday applications such
as filters, medical fabrics, life science and diagnostics,
wallcoverings and food packaging. In 2014, Ahlstrom’s
net sales from the continuing operations amounted to
EUR 1 billion. Our 3,400 employees serve customers in 22
countries. Ahlstrom’s share is quoted on the NASDAQ OMX
Helsinki. More information available at www.vwr.com
2 Qualitative Filter Papers
Qualitative Filter Papers 3
Qualitative
Filter Papers
Standard Grades (Wet-Strengthened)
These grades contain a reinforcement agent that increases their resistance to rupture when wet, such as in vacuum
filtration, and their resistance to acidic solutions.
Typical grade properties
Ahlstrom’s qualitative grades of filter paper are,
by definition, recommended for use in analytical
methods, which determine or identify particulate
constituents of a mixture irrespective of the
amount present. Qualitative filter papers are
often used in routine separation work that still
requires high purity and consistent performance.
Ahlstrom offers a complete range of low ash
filter papers for general laboratory work that
provides you with the correct combination
of particle retention, filtration speed, loading
capacity and wet-strength. All our qualitative
grades consist of > 95% super refined
α-cellulose and linter fibers.
Standard Grades (Non Wet-Strengthened)
Standard qualitative filter papers are suitable for quadrant folded or gravity flow applications. These grades contain
a high level of alpha-cellulose that provides high purity but will weaken when wet. The inherent strength of standard
(untreated) grades does not pose a problem when they are used in routine quadrant folded applications.
We do not recommend these grades for use in vacuum work or when wet handling is required.
Typical grade properties
Standard
Grades
Retention
in µm
Filtration Speed punch
Herzberg sec/100mls
Filtration Speed Rapidity
mls/min
Loading
Capacity
610
1.5
1724
4
Medium
642
2.0
229
30
Medium
601
2.5
124
55
Medium
237
3.0
114
60
Very High
609
4.0
98
70
Medium
613
6.0
114
60
Medium
631
10.0
34
200
High
615
25.0
29
235
High
617
35.0
19
360
Very High
Catalog numbers (100/box; items with grade numbers in bold are 50/box) Wet-Strength
Grades
Retention
in µm
Filtration Speed Herzberg
sec/100mls
Filtration Speed Rapidity
mls/min
Loading
Capacity
950
2.0
491
14
Medium
909
3.0
105
65
Medium
962
27.0
28
245
High
961
40.0
19
360
Very High
Catalog numbers (100/box)
*All circle diameters are in centimeters
Size*
950
909
962
961
4.25
47749-732
-
47749-790
-
4.7
47749-734
-
47749-792
-
5.5
47749-736
-
47749-794
47749-762
7
47749-738
-
47749-796
47749-764
9
47749-740
-
47749-798
47749-766
11
47749-742
47749-722
47749-800
47749-768
12.5
47749-744
47749-724
47749-802
47749-770
15
47749-746
47749-726
47749-804
47749-772
18.5
47749-748
47749-728
-
47749-774
24
47749-750
47749-730
47749-806
47749-778
32
47749-752
-
47749-810
47749-780
38.5
47749-754
-
-
47749-782
40
47749-756
-
47749-812
47749-784
45
47749-758
-
-
47749-786
50
47749-760
-
47749-814
47749-788
Pleated (Fluted) Filter Paper
Ahlstrom offers a full range of standard pleated grades that meet your needs from grades with rapid flow rates for filtration of viscous
materials to grades with tight matrices for removal of fine precipitates. Ahlstrom’s pre-pleated grades can save valuable time and maximize
the efficiency of the laboratory filter system. Pleating improves the effective surface area increasing flow rate and loading capacity thus
decreasing filtration time. Pleated circles are available in 12.5cm to 50cm diameters.
*All circle diameters are in centimeters
Typical grade properties
Size*
237
601
610
613
615
617
631
642
2.5
47749-618
47749-656
47749-672
-
-
-
-
-
4.25
47749-620
38000-025
47749-674
71440-026
-
-
47749-686
38001-029
4.7
47749-622
47749-660
-
-
-
-
47749-688
47749-710
5.5
38003-021
47745-808
38005-024
71440-028
47745-834
47745-820
-
38001-040
7
-
28342-016
47749-676
-
-
-
47749-690
-
513
613
6
114
60
Medium
25
29
235
High
47745-812
38005-068
71440-032
38004-062
47745-824
615
9
-
515
47749-692
47745-804
562
962
27
28
245
High
11
38003-087
47745-814
38005-080
71440-010
-
28342-034
47749-694
38001-109
12.5
38003-101
47745-816
38005-104
71440-012
38004-109
28342-032
47749-696
38001-120
15
38003-123
47745-818
38005-126
71440-014
38004-120
71440-006
47749-698
38001-142
18.5
47749-624
38000-160
38005-148
71440-016
38004-142
47745-826
47749-700
47745-806
20.5
47749-626
38000-182
-
-
71440-034
-
47749-702
47749-712
24
47749-628
-
47745-802
-
38004-164
30617-438
-
-
27
-
47749-664
47749-680
-
-
-
47749-706
47749-714
32
-
38000-229
47749-682
-
-
30617-440
47749-708
47749-716
38.5
-
47749-666
-
-
71440-040
-
-
47749-718
40
47749-630
47749-668
-
-
-
30617-442
-
-
24
47745-844
47745-844
47745-848
38002-088
47745-858
47749-720
32
28334-192
71440-004
-
47749-634
47745-860
50
47749-632
47749-670
47749-684
-
47745-838
47745-832
-
Filter paper
base
Retention
in µm
Filtration Speed
Herzberg sec/100mls
Filtration Speed
Rapidity mls/min
Loading
Capacity
542
642
2
229
30
Medium
509
609
4
85
80
Medium
Catalog numbers Pleated (Fluted) Grades (100/box)
*All circle diameters are in centimeters
Size*
509
513
515
542
562
12.5
47745-864
47745-840
47745-846
47745-850
47745-852
15
47745-866
47745-842
38000-196
38002-044
47745-854
18.5
47745-868
22224-999
38000-200
38002-066
47745-856
4 Quantitative Filter Papers
Chromatography, Electrophoresis and Blotting Paper 5
Quantitative Filter Papers
Ahlstrom manufactures a series of extremely
high purity, acid washed filter papers designed
for use in analytical and gravimetrical analysis.
All quantitative grades are made using pure
cellulose with an alpha-cellulose content of
almost 100% and meet the requirements of
ASTM E832-81 for Type II filter paper to be
used for quantitative analysis.
Hardened Low-Ash Filters – (Ash 0.01%)
Suitable for routine gravimetric analysis and typical preparation of samples for use in analysis involving instrumental
techniques. Low ash grades have intermediate ash content between qualitative grades and ashless grades.
Ashless Grades (Ash 0.007%)
Commonly used filters in many standardized test methods.Suitable for both gravimetric analysis and sample preparations
where a high-purity filter is preferred. Standard ashless grades do not contain any reinforcement agents.
Hardened Ashless Grades (Ash 0.006%)
These specially treated hardened ashless grades are
available for critical quantitative analytical techniques
requiring increased wet-strength and handling capacity.
– Manufactured from top quality cotton linters using
ultra-pure, reverse-osmosis water and further treated with
dilute acid to remove organic and inorganic impurities.
– Tough, smooth surface of these filters is free of loose
fibers to better collect wet precipitates.
– High chemical resistance to strong acid and alkali solutions.
Chromatography,
Electrophoresis
and Blotting Paper
Ahlstrom manufactures a complete line of high quality
chromatography, electrophoresis and blotting papers
for use in gel transfer applications and chromatography
techniques. These uniform, smooth, white sheets are
the high purity, high quality, and high value standard.
They are used in nucleic acid research such as
Southern, Northern and Western blots, electroblotting
and electrophoresis. Ahlstrom chromatography,
electrophoresis and blotting papers are made from high
purity and 100% FDA compliant alpha cotton cellulose,
using ultra-pure RO water and contain no additives
that could cause increased backgrounds or other
interference in detection systems.
Typical grade properties
Retention
in µm
Grades
Filtration Speed
Herzberg sec/100mls
Filtration Speed
Rapidity mls/min
Loading
Capacity
Grades
Thickness
mm
Ashless
601
0.19
13
Ashless
642
0.21
12
120
631
0.23
21
150
391
2-3
1200
7
Medium
Hardened Low Ashless
5-8
300
33
Medium
Hardened Low Ashless
388
12-15
40
267
Medium
Hardened Low Ashless
1.5
74
1724
2.0
4
229
Medium
30
Medium
Klemm
1/16th/min
— Uniform absorption
— Consistency across the sheet
— Lot-to-lot consistency
— High purity, no sizing or fillers
— Excellent wet-strength
and handling
— No hard spots or density
variations
— No airborne fibers
— Custom cut
— Bulk packaging
Absorption Speed
mm/30 min
Ahlstrom Thin Paper
125
54
10.0
34
200
Medium
Ashless
95
1.5
458
15
Medium
Hardened Ashless
75
2.0
149
45
Medium
Hardened Ashless
238
0.34
15
55
15.0
31
220
Medium
Hardened Ashless
237
0.42
18
150
222
0.83
33
220
243
0.95
21
180
320
2.48
48
240
Catalog numbers (100 circles/box) — Controlled absorption
Typical grade properties
Type
392
94
Key features
Ahlstrom Thick Papers
140
*All circle diameters are in centimeters
Size*
54
55
74
75
94
95
388
391
392
4.25
47749-436
47749-448
47749-464
47749-482
47749-498
47749-512
10754-­500
10754-­440
10754-454
5.5
47749-440
47749-452
47749-466
47749-484
38009-048
47745-760
10754-­424
10754-­444
10754-458
7
38007-002
38008-027
47749-468
47749-486
47749-500
47745-762
10754-­426
10754-508
10754-460
9
47745-730
47745-736
47745-740
47745-746
47745-754
47745-764
10754-­428
10754-­510
10754-462
11
47745-732
47745-738
47745-742
47745-748
38009-106
47745-766
10754-­430
10754-­512
10754-464
12.5
47745-734
28334-145
47745-744
47745-750
47745-756
47745-768
10754-­432
10754-446
10754-466
15
38007-080
28334-154
38006-106
47745-752
47745-758
47745-770
10754-­434
10754-448
10754-468
18.5
-
38008-129
38006-128
47749-488
47749-502
47749-514
10754-­436
10754-450
10754-470
24
47749-442
47749-454
47749-470
47749-490
47749-504
47749-516
10754-­438
10754-514
27
47749-444
47749-456
47749-472
47749-492
-
47749-518
10754-­502
32
47749-446
47749-458
47749-474
47749-494
-
47749-520
40
-
47749-460
47749-476
-
47749-506
47749-522
Catalog numbers (100/box; items with grade numbers in bold are 50/box)
*All sheet sizes are in centimeters; additional sizes available in sheets or rolls.
Size*
601
642
631
222
237
238
243
320
5 x 7.5
-
-
-
-
-
47749-816
-
28334-164
7x8
490005-080
-
-
490005-058
490005-066
47749-818
-
28334-162
7 x 10
47745-904
-
-
47745-908
47745-890
47745-886
-
28334-166
10 x 15
47745-906
-
-
47745-910
47745-892
28342-038
-
490005-078
11 x 14
-
-
-
-
-
47749-820
-
28334-170
14 x 16
-
-
-
47745-912
-
28342-040
-
28334-172
14 x 17
-
-
-
-
-
47749-824
-
-
10754-472
16 x 16
490005-082
-
-
490005-062
-
47749-828
-
-
10754-516
10754-474
16 x 18
490005-084
-
-
490005-064
-
47745-888
-
28334-174
10754-­504
10754-518
10754-476
20 x 20
47745-898
-
-
47745-914
47745-894
28334-178
-
28342-050
10754-­506
10754-452
10754-478
46 x 57
28334-194
47749-846
47749-848
47749-854
47745-896
28342-036
47749-850
-
6 Glass Microfiber Filters
Glass Microfiber Filters 7
Glass Microfiber
Filters
Products for Suspended Solids Analysis
This test for measuring solids in water calls for a glass filter disk without organic binder for some steps. After the filtering process, the filter
retaining the solids from method B, C, or D is heated to 550°C in a muffle furnace and desiccated as necessary until measured weight is
stable. Grade 169 meets the needs of both Standard Method 2540D: Total Suspended Solids and Standard Method 2540E: Volatile
Suspended Solids.
Ahlstrom offers a full range of glass microfiber filters
manufactured from 100% pure borosilicate glass.
Because of their intrinsic properties, glass microfiber
filters have wide applications in many areas of laboratory
analysis, especially when fine filtration and high loading
capacity is required. Applications for Ahlstrom glass
microfiber filters include environmental analysis for water,
wastewater, testing of soils, air pollution and monitoring,
research and process biochemistry, and gravimetric
analysis involving ignition of samples. Ahlstrom glass
microfiber filters are also found in the filtration of hot
gases and liquids, and in pre-filtration.
Changes in the weight of the filter when heated to this temperature can affect the reliability of this test. Grade 169 is designed to
maintain a stable weight at 550°C.
Key features
— Qualitative analysis
Any brittleness caused by the heat exposure can make the filter too difficult to handle and invalidate the test if pieces break off. Grade
169 exhibits similar handling characteristics before and after 30 minutes in a 600°C furnace.
— Laboratory analysis
— 100% pure borosilicate glass
Catalog numbers
— Rapid flow rate
Grade 169 (100 circles/box)
Pre-weighed Filters
Ahlstrom also offers a pre-washed and pre-weighed
filter for determination of suspended solids. Each filter is
washed and weighed following the procedures in the
latest version of STM 2540. It comes in an aluminum pan
with the weight printed on the side for ease of use.
*All circle diameters are in centimeters.
— Fine particle retention
0.7µm – 3.1µm
Size*
169
2.1
10199-­604
— High loading capacity
2.4
10199-­606
— Chemical and thermal
resistance (up to 500°C)
4.25
10199-­610
4.7
10199-­612
5.5
10199-­614
7.0
10199-­616
9.0
10199-­626
11.0
10199-­628
— Long shelf life
— Brilliant white color reflecting
more than 96% of visible light
Catalog numbers
Pre-weighed Filters (100 circles in pans/box)
*All circle diameters are in centimeters.
Size*
Pre-weighed
4.7
10199-­602
— Custom cut
Filter Papers for TCLP
Ahlstrom offers three microfiber glass grades for use in the toxicity characteristic leaching
procedure (TCLP) as described in EPA Method 1311.
Typical grade properties
Grades
Retention
in µm
Filtration Speed Herzberg
sec/100mls
Filtration Speed Rapidity
mls/min
Loading
Capacity
151
121
131
161
111
141
0.7
1.0
1.0
1.1
1.2
3.1
274
143
88
67
53
19
25
48
78
102
130
350
Very High
Very High
Very High
Very High
Very High
Very High
Catalog numbers (100 circles/box) *All circle diameters are in centimeters
Size*
111
121
131
141
151
161
2.1
2.4
2.5
4.25
4.7
5.5
7
9
11
12.5
15
38010-100
47745-772
47749-526
47745-774
47745-776
47745-778
47745-780
47745-782
47745-784
47745-786
47745-788
47749-532
38010-418
47749-534
47745-790
38010-429
38010-436
47745-792
47745-794
47749-538
47749-540
47749-542
47749-548
38010-670
47749-550
38010-685
47745-796
47745-798
47749-554
47742-552
47749-556
47749-558
47749-560
47749-562
28496-168
47749-564
28496-170
38010-725
47749-568
47749-570
47749-572
28496-172
47749-576
47749-578
47749-580
28496-174
47749-584
28496-176
38010-838
47749-586
28496-178
47749-588
28496-180
28496-184
47749-590
47749-592
47749-594
47749-602
47733-002
47749-604
38011-920
47733-000
47733-004
47749-608
38011-968
Grade 151 – Standard TCLP Filter
Grade 26 – Pre-washed Low Metal TCLP
This high performance binder-free grade,
described on page 17, is Ahlstrom’s
standard recommendation for TCLP testing.
Filter This grade uses the same acid-treated
glass microfiber media as Grade 193, which
is then acid-washed using 1N HNO3, as
described in EPA Method 1311. The filter
media is thoroughly rinsed in a multi-stage
process using copious amounts of highpurity
deionized water. Prewashing with acid
further reduces the content of metals to
exceptionally low levels. This eliminates the
need to acid-wash the filters in your lab,
saving valuable time and reducing waste
disposal and reagent costs.
Grade 193 – Low Metal TCLP Filter
This grade has similar performance
properties to Grade 151 and is made with
acid-treated borosilicate glass microfibers
with inherently low levels of barium
and zinc. The filter media contains no
binders or other additives that may cause
interference with samples. The filters resist
acids and bases and have a nominal
particle retention of 0.7 μm.
Catalog numbers Typical levels of trace
elements in Grade 26
Element
mg/L
Ag
0.02
As
0.010
Ba
0.200
Cd
0.002
Cr
0.013
Hg
0.0005
Pb
0.006
Se
0.004
*All circle diameters are in centimeters
Size*
Grade 193
Circles/Box
Grade 26
Circles/Box
4.7
12000-­108
100
-
100
9
12000-­110
100
97009-­972
50
11
12000-­112
100
12000-­100
50
12.5
12000-­114
100
-
50
14.2
12000-­116
100
-
50
15
12000-­118
100
-
50
8 Micro Filtration Products
Ahlstrom GenCollect™ Sample Collection Cards 9
Micro Filtration
Products
Ahlstrom GenCollect™
Sample Collection Cards
Ahlstrom offers the most popular membrane materials
for diverse applications. Gridded sterile microbiological
membranes and non-­sterile hydrophilic microfiltration
membranes are available. ReliaPrep™ syringe filters are
available in several different membranes and sizes to
accomodate a variety of sample matrices for demanding
sample preparation and microfiltration applications.
Ahlstrom’s GenCollect card is
an easy and cost-effective way
to collect and store biosamples
at ambient temperature for
a wide range of applications
such as genotyping, forensics
and paternity tests.
Ahlstrom Reliadisc™ Gridded Microbiological Monitor Membranes
Catalog numbers *All circle diameters are in centimeters
Membrane Type
Pore Size
Grid
Membrane Diameter (mm)
Pack of 1000
Pack of 3x100 for Auto-Dispenser
Cellulose Nitrate
0.45 μm
White w/ black grid
47
10192-­174
10192-­176
Cellulose Nitrate
0.45 μm
Black w/ white grid
47
10192-­154
Key features
Ahlstrom ReliaDisc™ Non-sterile Membrane Filtration Media
Catalog numbers *All circle diameters are in centimeters
Membrane Type
Pore Size
Grid
Membrane Diameter (mm)
Pack of 1000
Cellulose Acetate
0.45 μm
White w/ black grid
47
10192-­170
Nylon (Polyamide)
0.45 μm
Black w/ white grid
47
10192-­172
Ahlstrom ReliaPrep™ Non-Sterile Syringe Filters
Catalog numbers Filter Diameter (mm)
Pore Size (μm)
Pack of 500
Cellulose Acetate
28
0.2
10192-­156
28
0.45
10192-­158
15
0.22
10192-­162
15
0.45
10192-­166
25
0.22
10192-­168
25
0.45
10192-­198
28
0.2
10192-200
28
0.45
10192-202
4
0.22
10192-204
4
0.45
10192-180
Polyether Sulfone
PTFE
Glass Fiber Prefilter
Ahlstrom offers GenCollect™, a white card format and Ahlstrom
GenCollect™ Color, a pink card format. Ahlstrom GenCollect™ card is
recommended for easily identified samples, such as whole blood, while
Ahlstrom GenCollect™ Color is useful for clear samples such as saliva,
buccal cells or urine.
– Simple collection
– Nucleic acids stabilization
for short-term ambient storage
– Cost and time-saving DNA
purification
– Faster downstream analyses
– Ready-To-Use biosample
collection card
*All circle diameters are in centimeters
Membrane
Nylon (Polyamide)
Ahlstrom cards, made of high purity cellulose, provide a rapid
and safe way to collect, transport and store biological samples at ambient
temperature. Nucleic acids can be easily extracted from the biosamples
for subsequent analyses.
15
0.22
10192-184
15
0.45
10192-188
25
0.22
10192-192
25
0.45
10192-194
28
0.7
10192-196
Connectors: female luer lock inlet, male luer slip outlet
CA, PES, GF – MBS Housing; PTFE, Nylon – Polypropylene Housing
Typical characteristics
Product
Ahlstrom GenCollect™
Ahlstrom GenCollect™
Color
Cards/Pack
Sample areas/
card
Max. Vol
loaded/sample
area(μl)
100
4
125
100
2
125
100
1
125
100
4
125
100
2
125
100
1
125
Sample type
Blood
Saliva
Buccal Cells
Urine
Max.
storage
Applications
6 months
PCR, Real Time PCR,
direct PCR Sequencing,
STR analysis, plasmid
amplification
6 months
PCR, Real Time PCR,
direct PCR Sequencing,
STR analysis, plasmid
amplification
10 Specialty Products
Specialty Products 11
Specialty Products
Micro-Quartz Fiber Filters
Ahlstrom offers specialty products for the scientific industry. Many products
were designed alongside the researchers doing test development in order to
provide the necessary performance characteristics.
Element
mg/L
Al
25
As
0.2
Cd
<0.02
Co
<0.5
Cr
3.5
Cu
<1
Grade 169 (100 circles/box)
Fe
20
*All circle diameters are in centimeters.
Hg
<0.025
169
Mg
15
10199-­564
Mn
1
— Binder-free
Na
10
Ni
0.5
— Particularly suitable for low
amounts of particles
Pb
0.3
Sb
<1
Sn
<0.5
Ti
1.5
V
<0.5
Zn
3
Key features
pH Papers and Test Strips
— Each batch of MK 360 is
trace elements certified
Ahlstrom offers a range of test papers for rapid determination of pH and other conditions. Universal pH indicator
papers are stocked in a roll of 5m in a plastic case, a refill pack of 3 reels for that case, and in a box of 200 strips.
pH test strips, which have small squares of paper, each prepared with a different indicator, are also available.
Ahlstrom offers a larger selection of pH indicator papers and test strips for different pH ranges plus a selection of
reagent papers for special order. Please contact customer service for additional details.
Catalog numbers — Made of extremely pure
micro-quartz filters
*All circle diameters are in centimeters
Roll of 5m
Refill pack x3
Box of 200
Test Strip 100 per box
pH 0-14
-
-
-
10199-­5 82
pH 1-14
10199-­598
10199-­600
10199-­618
-
pH 1-11
10199-­620
10199-­622
10199-­624
-
Typical levels of trace
elements in MK 360
Ahlstrom’s micro-quartz filters are useful for testing hot “stack” gases as the quartz fibers
can withstand temperatures up to 900°C. In addition, micro-quartz is used when the highest
purity media is required. With excellent filtration properties and minimal traces of metals
and minerals, quartz fibers are dimensionally stable and can be used in the analysis of
acidic gases (with the exception of HF). Other sizes available for special order. T293 also
available for special order.
Catalog numbers
Size*
MK 360
— Conditioned by high
temperature pre-heating
Typical grade properties
Extraction thimbles
Cellulose extraction thimbles
Micro-glass fiber thimbles
Micro-quartz fiber thimbles
Ahlstrom offers high purity extraction
thimbles. Cellulose thimbles are high
quality sample reservoirs for quality control,
research, and analytical applications
where solvent extraction of solids and
semi-solids must be carried out. The use of
a Soxhlet extractor provides a safe method
of extraction with toxic and other noxious
solvents. Walls of cellulose thimbles are
approximately 1.5 mm thick and have
been found to perform satisfactorily in
application requiring either a single or
double wall thickness.
Glass thimbles are used to sample dust
particles and aerosols from gaseous
streams in the analytical registration
of environmental pollution and for
Soxhlet extractions requiring solvents too
aggressive for the cellulose thimbles.
Quartz thimbles are used for emission
testing in high temperature environments.
They can also be used for testing acidic
gases which are not compatible with
micro-glass fiber thimbles. Quartz meets
the highest purity requirements due to the
lowest possible heavy metal content.
Grades
Basic Weight g/m2s
Efficiency %**
Pressure Drop mbar*
Penetration %**
Temperature °C
MK 360
85
99.95
51.5
<0.05
900 max
Sugar Testing Filter Paper
Ahlstrom offers a full range of specially designed filter paper for use in
the sugar industry. Ahlstrom 8613 has a smooth black finish designed
for use in applications requiring visual examination of particles.
Typical grade properties
Catalog numbers
Catalog numbers
*Thimbles are packed 25 pieces per box
*Thimbles are packed 25 pieces per box
Grades
Retention
in µm
Filtration Speed
Herzberg sec/100mls
8613
4
118
Filtration Speed
Rapidity mls/min
Wet Burst
Inches
Loading
Capacity
58
29
Medium
Size
Cellulose
Size
Micro-glass
22 x 80 mm
28320-406
19 x 90 mm
10199-­566
25 x 80 mm
28320-500
30 x 100 mm
10199-­568
26 x 60 mm
28320-408
33 x 94 mm
10199-­570
33 x 80 mm
28496-164
Polyshield® Fluid Barriers
33 x 94 mm
28320-506
43 x 123 mm
28320-510
Ahlstrom’s Polyshield Fluid Barrier is a super absorbent, pure cellulose
paper with an impermeable polyethylene backing that absorbs splatters
and spills, and protects work areas from contamination and damage by
toxic, infectious, corrosive, radioactive or staining materials. Polyshield’s
smooth, firm surface does not inhibit stability of bottles or tubes. Disposal
is safe and easy and Polyshield ashes readily upon incineration.
Catalog numbers
*Thimbles are packed 25 pieces per box
Size
Quartz
43 x 123 mm
10199-­580
Catalog numbers
Sugar Testing Grades (8613 and 962: 100/pk; 961: 50/pk)
*All circle diameters are in centimeters.
Grade 613 and 615 catalog numbers are shown in the Qualitative Filter Paper section.
Size*
8613
2.4
3
4.25
4.7
5.5
7
9
11
12.5
15
18.5
47745-870
28342-012
28342-020
47745-872
28342-010
47745-874
28320-555
47745-876
47745-878
8613-1500
8613-1850
Catalog numbers
*50 sheets per pack
Size
Grade 4002
46cm x 57cm Sheets
47745-882
46cm x 50m Roll
47745-880
92cm x 50m Roll
47745-884
Custom Order and
Product Development
Ahlstrom is recognized worldwide as
a leading custom manufacturer and
converter of filtration, absorbent and
specialized web materials. Ahlstrom‘s
technical staff will work with your research
and development department to determine
specific product needs and specifications.
Products listed in this catalog represent the
grades and sizes most commonly used in the
laboratory market. Most Ahlstrom papers
can be supplied in special sheet, roll or diecut sizes. To obtain information on other sizes
and grades, please contact VWR.
Samples
Quality
Product samples are available, upon request,
to assist you in determining the Ahlstrom
grade that is most suited to your application.
Please contact VWR to obtain samples.
Ahlstrom’s continued commitment to our
customers is supported through registered
adherence to ISO 9001 standards.
1215 Lit. No. 011175WREV